Miss Liu is an English teacher. She is very young. She works very well and the students all like her. There are twenty-six boys and twenty-four girls in her class. Now some of them are playing on the playground. Jim and Bill are jumping. Sam and Mike are running. Lucy and Simon are singing. The other girls are playing games with their teacher. They’re happy.

(　 )51. Miss Liu is______.

A. a Chinese teacher　　　　　　　 B. very old　

C. an English teacher　　　　　　 D. not good

(　 )52 There are _____ students in Miss Liu’s class.

A. 26　　　　 B.40　　　 C.24　　　 D.50

(　 )53. The students are ______.

A. at work　　　 B. at home　　 　　C. all happy　　　　　 D. in the classroom

(　 )54. Who is singing?　

A. Miss Liu　　 B. Lucy and Simon　　 C. Sam and Mike　　 D. Jim and Bill

(　 )55. All the students _________.

A. like Miss Liu　　　　　　　　　　 B. are running　　

C.are playing games　　　　　　　　　 D. are jumping

-- What a sweet song !

-- So it is! But who_______ in the room?

　 A. sings　　　　　　　 B. is singing　　　　　 C. has sung

A. to sing　　　　    B. is singing　　　　   C. singing　　　　 D. sang

A： What ________ 　　　　　　the boy and the girl doing?

B： The boy is flying a frisby. The girl is singing.　　　

[　　]

A．does　　　B．is　　　C．can　　　D．are